Ignition Relay Malfunction Detection Function
WARNING: This page is about a different car, the 2008 Infiniti EX35. However, it is still accessible from the selected car via links, so may be relevant.
- IPDM E/R monitors the voltage at the contact circuit and excitation coil circuit of the ignition relay inside it.
- IPDM E/R judges the ignition relay error if the voltage differs between the contact circuit and the excitation coil circuit.
- If the ignition relay cannot turn OFF due to contact seizure, it activates the tail lamp relay for 10 minutes to alert the user to the ignition relay malfunction when the ignition switch is turned OFF.IGNITION RELAY MALFUNCTION DETECTION FUNCTION TABLE
Voltage judgment IPDM E/R judgment Operation Ignition relay contact side Ignition relay excitation coil side ON ON Ignition relay ON normal - OFF OFF Ignition relay OFF normal - ON OFF Ignition relay ON stuck - Detects DTC "B2098: IGN RELAY ON"
- Turns ON the tail lamp relay for 10 minutes
OFF ON Ignition relay OFF stuck Detects DTC "B2099: IGN RELAY OFF"